Finding the Fourth Proportional to 1,945.47, 2,684.91 and 1,316.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,945.47 : 2,684.91 = 1,316.10 : x
2. Step 2: Convert to fraction form
   1,945.47/2,684.91 = 1,316.10/x
3. Step 3: Cross multiply
   1,945.47x = 2,684.91 × 1,316.10
4. Step 4: Simplify right side
   1,945.47x = 3,533,610.05
5. Step 5: Solve for x
   x = 3,533,610.05/1,945.47
6. Step 6: Final answer
   x = 1,816.33